Insole of a shoe

ABSTRACT

An insole of a shoe, comprises a insole board having a shape of substantially like the sole of human foot to be disposed on the top side of a sole of the shoe, and a heel cup coupled on said insole board at rear section thereof by means of injection molding and corresponding to the heel of human foot; whereby said insole having a simpler work process, having less elements and having a stronger coupling strength.

FIELD OF THE INVENTION

[0001] The present invention relates generally to a shoe, and moreparticularly to an insole of the shoe, which has an easier way to makethe insole and couple secured.

BACKGROUND OF THE INVENTION

[0002] A conventional insole of a shoe, which has an insole board 7disposed on the top side of the sole of the shoes for foot of human putthereon. However, the insole board 7 further disposes a heel cup 8thereon to provide heel of foot a good support and a better fitness.

[0003] Please refer to FIG. 1 and FIG. 2, for the heel cup 8 can securedplastered on the insole board 7, there usually is a non-woven fabrics 9disposed in between the insole board 7 and the heel cup 8. Thus, allelements of the conventional insole have to be worked independently, andthen plaster them together one by one. The conventional way wastematerials and the elements usually can not be plastered precisely at thepredetermined positions. So, the conventional method to manufactureshoes has a higher proportion defective, and more particular, it costs alot.

SUMMARY OF THE INVENTION

[0004] The primary objective of the invention is to provide an insole ofa shoe, which can be easy fixed a heel cup on an insole board securely.

[0005] The other objective of the invention is to provide an insole of ashoe, which can be molded in quickly and has a superior couplingstrength.

[0006] According to the objectives described above, the insole of thepresent invention has an insole board with a shape substantially likethe sole of human foot to be disposed on the top side of a sole of theshoe. A heel cup is made from injection molding on the rear section ofthe insole board, corresponding to the heel of human foot.

[0007] Thus, the insole has an easier way to be worked and to beassembled. The elements the insole of the present invention are lessthan the conventional insole. Furthermore, the insole of the presentinvention has a stronger coupling strength with the insole board.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008]FIG. 1 shows a perspective view of a conventional insole;

[0009]FIG. 2 shows an exploded view of the conventional insole as showin FIG. 1;

[0010]FIG. 3 shows a top view of a prefer embodiment of presentinvention;

[0011]FIG. 4 shows a sectional view of the prefer embodiment of presentinvention;

[0012]FIG. 5 shows a sectional view along 5-5 line in FIG. 4;

[0013]FIG. 6 shows a top view of the insole board of the preferembodiment of the present invention;

[0014]FIG. 7 shows a lateral view of the insole board of the preferembodiment of the present invention;

[0015]FIG. 8 is a perspective view, showing the insole board being putin a mold;

[0016]FIG. 9 is a perspective view following FIG. 8, showing the movabledie of the mold coupling on the stationary die;

[0017]FIG. 10 is a perspective view following FIG. 9, showing plasticbeing injected into the cavity of the mold, and FIG. 11 is a perspectiveview following FIG. 10, showing the die being opened and the insoleboard being taken out of the mold.

DETAIL DESCRIPTION OF THE INVENTION

[0018] Please refer to FIGS. 3-7, the prefer embodiment of the presentinvention provides an insole of a shoe, which is disposed on the topside of a sole of the shoe, comprising:

[0019] An insole board 10, which is made of paper or cloth and has ashape substantially like the sole of human foot to put it on the topsideof the sole of the shoe, has a front sole portion 11 at front sidethereof and a coupling portion 12 at rear section thereof.

[0020] A heel cup 20, which is made of plastic, is coupled on the topsurface of the coupling portion 12 of the insole board 10 by means ofinjection molding. The heel cup 20 corresponds to the heel of humanfoot. The heel cup 20 has a main base portion 21, a covering portion 22and an smoothing portion 23 coupled on the coupling portion 12 of theinsole board 10. Wherein, the covering portion 22 has a curved shape,which is extending outwards and upwards at the lateral sides and therear sides. The smoothing portion 23 has a thick same as at adjacencywith the base portion 21 thereof and gradually thinning to front side ofjunction with the insole board 10 thereof.

[0021] Hereunder is the description of how to mold the insole of theprefer embodiment of the present invention:

[0022] First, please refer to FIG. 8, it has to be made from a mold, themold constructs from a movable die M1 and a stationary die M2, andformed a cavity C between the movable die M1 and the stationary die M2.The insole board 10 is put into the cavity C for the heel cup 20 can bemolded thereon later.

[0023] Please refer to FIG. 9, put the insole board 10 into the cavity Cand heat the mold to a predetermined temperature. Then, as shown in FIG.10, inject melted plastic into the cavity C for the plastic can bemolded on the coupling portion 12 of the insole board 10 directly toform the heel cup 20.

[0024] After the plastic solidifies, we can remove the movable die M1from the stationary die M2 and take the insole board 10 out, as shown inFIG. 11. The insole of the present invention has been completed now.

[0025] The heel cup 20 is coupled on the insole board 10 by means ofinjection molding will make the heel cup 20 locating precisely at thepredetermined position. The procedures to make the insole of the presentinvention are very easy and the heel cup 20 has a stronger couplingstrength to be secured on the insole board 10.

[0026] By description of the embodiment above, the advantages of thepresent invention are:

[0027] 1. The heel cup is coupled on the insole board by means ofinjection molding, the work process is very fast and without having totake any glue. So, the insole of the present invention has a lower cost.

[0028] 2. For the heel cup is molded by injection molding, the heel cupcan be formed an exactly shape as well as the insole board of beingdesigned.

What is claimed is:
 1. An insole of a shoe, comprising: a insole boardhaving a shape of substantially like the sole of human foot to bedisposed on the top side of a sole of the shoe, and a heel cup coupledon said insole board at rear section thereof by means of injectionmolding and corresponding to the heel of human foot; whereby said insolehaving a simpler work process, having less elements and having astronger coupling strength.
 2. The insole as defined in claim 1, whereinthe coupled edge of said insole board and said heel cup has a curvedshape, which is extending outwards and upwards.
 3. The insole as definedin claim 1, wherein the front end of said heel cup, which is coupled onsaid insole board, has a shape of thicker at rear side thereof andgradually thinning to the front side thereof.